Casing for motor gearing and starter connections.



M. L. JENKINS. CASING FOR. MOTOR GEARING AND STARTER CONNECTIONS.

APPLICATION FILED AUG.2B,1913.

1,102,338, Patented July 7, 1914.

3 SHEETS SHEET 1.

M. L. JENKINS.

CASING FOR MOTOR GEARING AND STARTER CONNECTIONS.

APPLIUATION I'ILED'AUG. 28, 1913.

1,102,338. Patented July 7, 1914.

3 SHEETSBHEET 2.

Patented July 7, 1914.

3 SHEETSSHEET 3.

open end thereof.

UNITED STATES PATENT or FioE.

MERRILL L. JENKINS, OF HARVEY, ILLINOIS, ASSIGNOR TO BUDA COMPANY, OFCHICAQO, ILLINOIS, A CORPORATION OF ILLINOIS.

CASING FOB MOTOR GEABING AND STARTER CONNECTIONS.

Specification of Letters Batent.

Patented July 7, 1914.

Application filed August 28, 1913. Serial No. 757,108.

T 0 all whom it may concern Be it known that I, MERRILL L. JENKINS, acitizen of the United States, and residing at Harvey, county of Cook,and State of Illinois, have invented certain new and useful Improvementsin Casings for Motor Gearing and Starter Connections, of which thefollowing is a specification.

My invention relates generally to improvements in a crank case for anexplosion motor, and more particularly to a novel end plate or casingadapted to be attached to and cover the open end of a crank case; andwhich has for its rincipal objects the provision of means a a ted toinclose timing or valve gearing or inarily located in close proximity tothe open end of a crank case and designed to protect snob gearing fromdamage by contact with or interference from self starter or otherconnections in operative relation with the maincrank shaft; togetherwith means cooperating therewith designed to form :1 casing for the saidconnections.

These, together with such other objects as may hereinafter appear, orare incident to my invention, I attain by means of a. constructionillustrated in preferred form in the accompanying drawings, wherein;

Figure 1 is a view in perspective of the motor crank case, illustratingdiagrammatically the application of my invention to the Figure 2 is aside elevation of one end of the crank erase, the ports in which myinvention particularly resides being shown in section.

Figure 3 represents a perspective of the dissociated parts shownassembled in Figure 2.

Figure 4 is a front elevation of the said parts, and Figure 5 is asection therethrough on the line V-V of Figure l.

Broadly stated, the invention contemplates the provision in a motorcrank shaft casing having an open. end, of an end plate adapted to closesaid open end, and a cover plate provided to coiiperate with the endplate to form a casing for a drive connection between self startingmechanism located adjacent the said open end, and wherein the driveconnection is shut 05 by the said end plate from mechanism within thecraink shaft casing and adjacent the open on It is apparent that thisarrangement of coiiperating end and cover plates can boas efiectivelyemployed in housing other connections similarly related to motor mecha--,nism, such as connections to a 'fan in an air cooled motor. The splashsystem is largely in use for oiling the mechanism within motor crankcases, and in cases where the connections above referred to are in theform of a belt, it will be obvious that the shutting off of the belt'from possible contact with the oil in the crank case is a particularlyadvantageous feature.

Referring to Figure 1, which illustrates in assembled form the generalrelation of the parts, A indicates a motor having: a crank case 6 whichmay comprise the upper and lower arts as shown. Suitably mountcd withint to crank case 6 to extend through the open end 7 thereof .18 a maincrank shaft 75 8, carrying thereon a gear 9 adapted to be in operativerelation with other gears, which together with the gear 9 constitute thetiming or valve gearing usually disposed withconnections 11 for theprotection of the former from belt interferences, which frequentlyresult in their stoppage or damage, and with this in. view I show thecrank case 6 provided with the attachment designated as a whole by O,which covers in the open end of the crank case and which also serves tobox in the starter connections.

In the practice of my invention, the at tarhment C preferably comprisestwo parts,

the inner gear case or end plate 12 and the cover plate 14.

The former is provided with a peripheral flange 12 by which it isadapted to be secured to the crank case to inc-lose the open end thereofand the timing gears located contiguous thereto.

An effective -means of mounting the starter B is providedvin an offsetportion 12 of the gear case 12 to which the starter is rigidly attachedby means of bolts 13. The starter shaft may be provided with a bearingat 15 in the web of the case and extends outwardly therethrough toreceive its sprocket 10". When the case 12-is attached to the crankcase, the outwardly projecting end .of the shaft 8 also extends; throughan enlarged opening 16 formed-in the web of the case, to receivethereonf-izs sprocket 8 whose hub is loosely received the said opening16, Y

Formed on the outer face and about the major portion ofthe case 12 is anout-turned flange 17 entirely surround =the starter. belt connectionstothe. main ishaft, and Leo operating with the-cover plate 14 tocompletely house the said connectionathecover plate being removablvsecured by bolts to a marginal flange 18 offset from the flange 17..

From the'description thus far made and positioned as shown, it will beapparent that the parts are easily assembled and that the inner plate orcase 12 not .onl provides a bearing for the starter shaft, ut alsoconstitutes a guard means between the gearmg and starter connections.Another advantage resides in the fact that the case acts as a rigidsupport for the starter, and is very effective in obtaining a compactarrangement of the latter with respect to the motor i itself, Readyaccess may be had to timing gears. and'starter connections to the shaft,as the case'- and cover plate are easily detachable endwise from thecrank shaft case, as will be I clearly understoodfrom an inspection ofthe drawings. 45 It is obvious that structural variations in point ofdetail may be made, without departmg from the scope of my invention aspointe'd out in the appended claims. The essential features and elementsof the device, together with v its simplicity and other advantagesthereof, will be clearly apparent to those skilled in the art Havingthus described myinvention "and illustrated its use, what I claim as newand desire to secure by Letters Patent is the folowin g 1. 1%1 anexplosion motor, the combination with a main crank shaft, a crank shaftcasing havin an open end, and a starter ad- "k ent sai open end, of adriving connection ,et'ween the crank shaft and self starter, an end,late for closing the open end of the crang shaft casing and throughwhich the shaft of the starter extends, and a cover 05 plate cooperatingwith said end plate to with a main crank shaft, a ing having an openend, and a starter adjacent said open end, of a drivin between the crankshaft and t the starter, an end plate for closing said open end andadapted to afford a bearing for the starter shaft, tening the platestogether, operating to form a casing for the said driving connections.

5 with ;ing having an open end, and a starter adj! Scent said betweenthe crank shaft and the shaft of the starter, consisting 0 'end andthrough which the sha ts extend, and means cooperating with said to boxin said ,a sm v In an explosion motor,

With a main crank shaft, a crank shaft casing, and -plate. for thecasing provided with an offset web is etween the crank shaft and startershaft,

and means and offset portion to box in said nection.

2. In combination with a'm otor crank case having gearing disposedinopfoximity to an open end ed to inclose said open end and gearin acrank shaft in cent said open shaft including the ends of both shaftsbeing adapted to extend outwardly through the web of the plate, alrlldconnections between the ends of the said 8 ereof, of a casmg or plateadaptsaid crank case,mea'ns a jaend for starting said crank as a memberthereof a shaft,

afts. a 3. In combination wlth a motor crank case having an open end andgearing disposed in proximity t ably mounted on said crank case andadapted to .inclose the open end and gearing, a main 3 crank. shaft,starting mounted on the endplate adjacent the said o en end and t ecrank sha tinned between the gearing and the said nectionaand meanscooperating with the end plate to form nections.

ereto, of an end plate detachgrovided with connections to the end platebein cona casing for the said con- 4. In 'an explosion motor, thecombination crank shaft casconnection e shaft of a cover plate, meansfor fassaid plates co- 5. In an explosion motor, the combination a maincrank shaft, a crank shaft casopen end, of a driving connection asufpporting means for the starter an end plate closin the open end platedriving connection. 6. In an explosion motor, the combination with amain crank shaft, a crank shaft casing having an jacent said open endand including a shaft, of an end'plate for closing through which the shat open end, and mechanism ada connection between the said shafts, and

of the said mechprojects, substantially as described.

the combination starting mechanism, of an end ortion through which thestartershaft a apted to extend, a driving connection coiiperating withsaid end plate driving conmechanism posi- I said open end and 8. Incombination, a crank casing prov1ded with an ofi'set portion at one end,a mam crank shaft projecting through said end, mechanism positionedwithout the ass ing having its shsit extended throu b said efisetpoftion, a connection between t e ends of the shafts, and a chamberedfitting constructed and, arranged to re ister with the end of the casinand its 0 set portion to it form a housing or the said connection andthe ends of the shafts, substantially as described.

In testimony whereof I have hereuntc signed my name in the presence ofthe two subscribed witnesses.

MERRILL L. JENKINS.

Witnesses:

C. M. "WALLACE, L. C. CURL.

